HT82K74E Datasheet, PDF (1/56 Pages) Holtek Semiconductor Inc – 27MHz Keyboard/ Mouse TX 8-Bit MCU

HT82K74E/HT82K74EE
27MHz Keyboard/ Mouse TX 8-Bit MCU
Technical Document
· Application Note
- HA0075E MCU Reset and Oscillator Circuits Application Note
Features
· Operating voltage:
f_SYS= 27MHz: 3.0V~3.3V for crystal mode
· Program Memory: 2K´15 bits
· Data Memory: 96´8 bits
· 36 bidirectional I/O lines, with pull-high options
· Watchdog Timer function
· Single 16-bit internal timer with overflow interrupt
and timer input
· Power down and wake-up functions to reduce
power consumption
· 4-level subroutine nesting
· Bit manipulation instruction
· Table read instructions
· Built-in DC/DC to provide stable (2.8V, 3.0V, 3.3V
use configuration option) DC_DC 3.0V with error
±0.1V
· 2.2V/2.0V with ± 0.1V tolerance or 1.8V Low battery
detector with internal bit set, it detects the BAT-in
input voltage
· 128´8 bits data EEPROM for HT82K74EE
· One external crystal (27MHz) to supply
microcontroller system clock
· 63 powerful instructions
· All instructions executed in one or two machine
cycles
· Low voltage reset function
· Crystal oscillator which built-in capacitor value can
configure by firmwave OSCC register
· Two bit to define microcontroller system clock
(f_SYS/1, f_SYS/4, f_SYS/8, f_SYS/16)
· HT82K74E:
28-pin SSOP, 32-pin QFN and
48-pin SSOP/LQFP packages
· HT82K74EE:
28-pin SSOP and 48-pin SSOP/LQFP packages
General Description
The device is an 8-bit high performance, RISC architec-
ture microcontroller devices specifically designed for
multiple I/O control product applications.
The advantages of low power consumption, I/O flexibil-
ity, timer functions, Power Down and wake-up functions,
Watchdog timer, motor driving, industrial control, con-
sumer products, subsystem controllers, etc.
Block Diagram
There are two dice in the HT82K74EE package: one is
the HT82K74E MCU, the other is a 128´8 bits EEPROM
used for data memory purpose. The two dice are
wire-bonded to form HT82K74EE
S ta c k
EEPRO M
D a ta M e m o ry
O TP
P ro g ra m
M e m o ry
RAM
D a ta M e m o ry
R eset
C ir c u it
8 - b it
R IS C C o re
W a tc h d o g T im e r
O s c illa to r
W a tc h d o g
T im e r
V o lta g e
D e te c to r
I/O
1 6 - b it
P ow er
C ry s ta l
In te rru p t
P o rts
T im e r
A m p lifie r
O s c illa to r
C o n tr o lle r
D C /D C
Rev. 1.00
1
December 15, 2009